\name{rule.evaluate}
\alias{rule.evaluate}
\title{Evaluate A Rule}
\description{
  Evaluates a rule.
}
\usage{
rule.evaluate(rule, instance)
}
\arguments{
  \item{rule}{a rule to evaluate.}
  \item{instance}{an example from data set.}
}
\details{
  ~~ If necessary, more details than the description above ~~
}
